Apparatus for washing boreholes



Feb. 3, 1931.

T. REINHOLD APPARATUS FOR'WASHING BOREHOLES Original Filed March 20, 1924 y Wm.

patented Feb. 3, 1931 nia niente APPARATUS FOB AV7ASIHIING' BOBEH'OLES original application filed March 20, 199A, Serial No. 700,729, and in the Netherlands March 2.9,V 1923. Divided and this application led January 11, 1928. Serial No. 246,029.

I pending application No. 700,729 filed March said photographs, it will readily be under# 20th, 1924, for a stratigraphicmeasuring instrument and relates to apparatuses for washing bore holes for the purpose of enabling photographs to be taken therein of the kmd 1o in which a photographic camera is provided which is adapted to be lowered into the me terior of a bore hole.

The principal object of the invention is to provide, in apparatuses of this kind, means for segregating a part of the bore hole within the range of the camera, and means for washing said part in order to enable clear photographs thereof to be t-aken.

Another object of the invention is to provide a. supply of water under pressure for the purpose of electing the washing operation.

A. further object of the invention is to provide a photographic apparatus comprising a tubular casing adapted to be inserted into the bore hole and having the camera arranged within it, packing rings arranged at the upper and lower ends of the apparatus and adapted to` seal the apparatus against theA wall of the bore hole, and means for the admission and discharge of washing water into and from the space between said packing rings in order to cleanse this space and enable photographs to be taken therein.

Although the apparatus according to the present invention is intended primarily for use in conjunction lwith the apparatus described and claimed in my aforesaid pending applicationNo. 700,729, which relates to a stratigraphic measuring instrument for simultaneously taking photographs of the interiors of bore holes and o compass indications showing the geographical'orientation of stood that the present invention can also be employedin connection with any known type of apparatus for taking photographs of bore holes, of the kind in which a camera is lowered into the interior of the bore hole.`

One construction of the apparatus embodyf ing the features of the invention as applied to the aforesaid stratigraphic measuring instrument is illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a longitudinal section of the instrument and the bore hole,

Fig. 2 a cross section on line 2-2 of Fig. 1,

Fig. 3 a longitudinal section through a modified construct-ion employing a horizontal closure device and Fig. 4 a longitudinal vsection illustrating a different arrangement of the electric lamps. The apparatus forming the subject of the invention'comprises a tubular casing 1 hav-l ing a bottom 2 and adapted to be closed at the top end by means of 'a screw closure 3. Above the closure 3 and below the bottom 2 are provided cylindrical chambers 4 and 5 for the recept-ion of pressure producing means. Piston rods 6 and 7 provided with pistons as indicated at 6 are adapted to move up and down through the covers or heads of the chamber 4 and 5, said piston rods 6 and 7 being adapted to exert pressure upon rubber packing rings8 and 9 respectively which rest with their upper surfaces against stationary plates 10 and 11 respectively. The piston rods may be actuated by any suitable known means, for instance, by means of air pressure, gas pressure or other iiuid pressure` or by electrical or mechanical means. The upper rod 6 is guided in a cylindrical casing 12 and serves also for the admission of water, a water passage, 13 being provided in the rod 6 which opens below the packing ring 8 and communicates with the annular space between the tubular casing 1 and the internal wall of the bore hole 14. Below the screw closure 3 and within the cylindrical chamber 22 of the casing is provided a photographic appara- .tus 15 the lens 19 of which is downwardly directed.

In the wall of the tubular casing 1 there is provided an opening closed in a watertight manner by a small transparent disc 16. An inclined mirror `17 is placed in the space 22 behind the disc 16. A magnetic or gyroscopic compass 18 is placed upon the bottom 2 of the casing 1. This compass is partly covered as regards the rays coming from the photographic apparatus by the mirror 17.

The disc 16 which in the construction shown is arranged in the vertical wall of the tubular casing 1 and closes hermetically the cylindrical space 22 against the bore hole 14, may as shown in Fig. 3 be arranged horizontally immediately below the lens 19 of the photographic apparatus. It will be seen thatin Fig. 3 thedisc 16 through which the rays pass may be very small and thus withstand very high pressures. In the construction of Fig. 3 the space 22 below the disc 16 is filled with Water. The disc 16 arranged in the vertical wall of the tubular casing 1 is not intended toei'ect a watertight closure and isA therefore not subjected to high pressure. It may be made very thin and serves only for preventing the entrance of dirty water into thespace 22. The water round the mirror 17 should be clear as otherwise it would detrimentally affect the action of the apparatus.

In the construction shown in Fig. 1 the Wall of the bore hole is illuminated'by electric incandescent lamps arranged inside the casing 1 laterally of the mirror 17 It is preferred, however, to arrange the source-of light in the manner shown in Fig. 4. According to Fig. 4 'the electric lamps 24 or other sources of light for illuminating the wall of the bore hole to be photographed throw i the light through the watertight transparent feo closing discs 23. VThe reflected rays pass through the watertight closing disc 16 to the lens 19. In 'this manner detrimental reection is avoided and the photographic views are muchrsharper than in the case in which both the direct and the reiected' rays have to pass through the same disc 16. If electric lamps of a particular construction are used the discs 23 may be entirely dispensed with. In the construction shown 1n Fig. 4 the compass is illuminated by a separate lamp 25.

In the construction according to Fig. 3 in which the transparentclosing disc 16 is arranged directly below the lens 19, the electric lamps are arranged between thelens 19 and the disc 16'.

The mirror 17 is provided at its upper edge with a cut-out portion 20 (see Fig. 2) through 'which the rays can pass from above to thecompass card 26.

The operation is as follows The instrument is lowered within the bore hole 14 to the required depth at which the direction and inclination of the various strata of the rock are to be ascertained. The means contained in the chambers 4 and 5 for producing pressure are then brought into action whereby'the rods 6 and 7 are caused to com-l press the rubberpacking rings 8 and 9. If

desired the rings might be compressed b pressure water taken from the pipe whic supplies the scavenging water during the drilling operation. The rings 8 and 9 are I sage 21 provided in the ring 8 and the disc y 10. When the water in the space 14 is suiiiciently clean and clear so as not to impede the photographic operation, the electric lamps are switched in and the apparatus 15 is brought into action. In this manner a photographic View of the part of the bore hole wall visible through the disc 16 or 16 is taken by the aid of the mirror 17. At the esl same time a part of the compass card visible` l through the cut-out portion 20 is taken upon the same plate. Itv will thus be seen that a view of a part of the bore hole is taken and at the same time a photographic record is made' of the direction in which the view was taken. The photographic view 'ves the inclination of the various strata o the drilled rock, whilst the position of the com ass card indicates the direction in which t e strata extend.

' If a series of such views is taken 'at definite angularl positions of the instrument, exact information may be obtained as regards stratitcation of the rock, the inclination of the strata and the directions in which the strata runs.

' I claim:

g 1. A photographic apparatus provided with a photographic camera adapted to be lowered into the interior of a bore hole for the purpose of taking photographs therein, comprising in combination: a tubular casin adapted to be inserted into the bore hole an having the camera arranged within it, a transparent window in said casing, packing rings arranged at the upper and lower ends of the apparatus, and means for the admission and dischar e of washin water into and from the space etween sai packing rings4 and adjacent said window, substantially as described.

2. A hotographic apparatus provided with a Ihotographic camera adapted to be lowered into the interior of a bore hole for the purpose of taking photographs therein,A comprising in combination: a tubular casin adapted to be inserted into the bore hole an having the camera arranged within it a transparent windowin said casing, packing y rings arranged at the upper and lower ends of the apparatus, piston rods adapted to exert pressure on said packing rings, and means for the admission and discharge of washing water into .and from the space between said packin rings and adjacent said window, substantia y as described. l

3. A photographie apparatus provided with a photographic camera adapted to be lowered into the interior of a bore holefor the purpose of taking photographstherein, comprising in combination: a tubular casin adaptedI to be inserted into the bore hole anv havmg the camera arran edwithin it, a transparent Window in sai casin packing rings arranged at the upper and ower'ends.

of the apparatus, an in et at the upper end of the apparatus for thevadmission of washing water into the space between said packing rings and adjacent said window, and an outlet at the up er end of the apparatus for the discharge o the washing water from the aforesaid space. p

Signed at Amsterdam, Netherlands, this 15th day of December, 1927.

TH. REINHOLD. 

